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Railroad cut through Maquoketa Shales, Graf, Iowa, late 1890s or early 1900s
Located north of Graf.
Man in front of section of Maquoketa shales, Graf, Iowa, late 1890s or early 1900s
Located west of Graf.
Effect of geological structure on topography, Graf, Iowa, late 1890s or early 1900s
Maquoketa shales, Graf, Iowa, late 1890s or early 1900s
The effects of geologic structure on topographic form within the driftless area. The gently undulating, lower slopes are underlain by Maquoketa Shale, the steep hills in the background are of the overlying Niagaran Limestone. Graf, Iowa, late 1890s or early 1900s
Located south from Lattner's, near Graf.
Graf, Iowa. CGW
Two old buildings.
Graf, Iowa. CGW
Single story wooden depot with sign for Graf. People standing in front of the depot.
Railroad cut through Maquoketa Shales, Graf, Iowa, late 1890s or early 1900s
Located north of Graf.
Man in front of section of Maquoketa shales, Graf, Iowa, late 1890s or early 1900s
Located west of Graf.
Effect of geological structure on topography, Graf, Iowa, late 1890s or early 1900s
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